Improvement in spoke-tenoning and hub-boring machines



` To all whom it may concern:

N @d-mj lates para aan.

JOHNDEMING, oFjsALnnonIo, Asslenon'ro HIMsELF AND Ap/R. .SIL-

VER, or SAME PLAGE. *wr* Leam'raaat No. 103,157, natal May 17, 1870:

IMPROVEMENT IN. SPKE-TENONING. AND HUB-BORING- MACHINES.

The Schedule referred to in these Letters Patent and making part vof the same.

Be it known that I, JOHN DEMING, of Salem, in the count-y of Columbiana and State of Ohio, have invented a "new and improved Spoke-Tenoning and Hub-Boring Machine; and I do hereby declare that" the following ris a full, clear, and exact description thereof,` whichwill enable others skilled in the art to make and use the same, reference being hadto the accompanyingdrawings forming part of this specification. This invention relates to tenoning and hub-boring machinery, and consists in an improved construction .ndarrangement of thefparts composing the boring evlce. i

i \Figure lis a side elevation of my improved nia-- chine, a part being brokcnlout to show the adjustable connection of theh`ubcentering and holding devices;

, I1`1gilre2` is a plan view;

Figure 3 is a transverse sect-ion taken on the line :v'

fc, showing the spoke-centering devices; Figure 4 is a horizontal .section on the line y y,

showing the adjusting devices for raising,lowerin g,

and holding theI boring or teuoning tool-head Figvre 5 is a sectional elevation taken on the line z, andshowing the hub-centering and holding devices;

Figure 6 is a faceview; v Figure 7 is a side elevation;

Figure 8, a'dctail view of the improved vtcnoningtool; and

Figure 9 is arpartial plan view of the bottom.

Similar letters of reference indica-te corresponding parts.

`A is a long frame or bench, such as commonly used for' such machines, with vertical slots near each end,

and another near the center, for thesupport of the application ofthe ear-E to the head, the nut Fto the plate orbench, and the 'adj usting-screwG, for raising the head up or lowering it down; also, in providing the clamping-nut H and clamping-screw I for clamping the shank D-against the side of the slot, through the bench, for the said shank to hold it firmly at any point. .l 7

VI- also provide a stay-plate, K, on. the top of the frame, at the side againstwhich the -shank is clamped, and lapping around the edges' with an extension, Ii', passing` through thc slot for `the shank D, to hold it niore iirmly and truly than it could be if clamped against the wood. In this case thc shank D is rcbated on the side against which the clamping-nut bears, and the clamping-nut is alsorebated, so that apart thereof will fit into the space of the slot in theshank, but any other equivalent arrangemciit thereof may be made. j

For feeding the spindle of the boring or tcnoningtool, I have attached,.near the rear end of it, a toothedy bar, L, runuingparallel with it outside of the'sleevc, and provided therewith a segmental gear and handle, M, supported in brackets N attached to the sleeve, and arranged to work the said toothed b ar back and `forth by moving' the handle properly. The said bar L is connected to the spindle, so as to cause it to slide' Y while allowing it to turn. For centering and holding the end of the spoke'I have provided the vertically-adj estable netched plate `O, at the end of the arm P, for a rest therefor, and

' f'elloes, I have provided the disk S, having a vertical shank, for attachmentto the bench in the central slot and the spiral ribs T ou the upper face. l The radially-slotted jaw-holder u and the jaws V, working in the said jawfholder to and from the center, and engaging, by means of projections on the under sides, with the ribs T, whereby they are moved when either the holder or thedisk is turned, the other being held, stationary. y

i The jaws V, which clamp thearticle to be held between the vertical projections thereof, are arranged so that they may be readily taken out and reversed in position to .vary'their capacity for holding large or I small'articles. lhcv said vertical projections of the jaws being at one end thereof, will, by thus reversing the said jaws, be brought nearer to or further from thecenter.

`In order to make use of this apparatus for spacing the hubs for boring the holes at regular distances apart, and for different numbers of holes, I have pro vided the periphery of this disk S with a number of rows of holes or countersinks for thereception of the point of a spring holder, W,.and, in order to prevent the latter from accidentally moving from one row to another while turning `from one hole to another of a row, I haveprovided grooves a inthe face of the disk connecting the holes of cach row, to serve as guides to the pointer while thedisk islv being turned to bring the respective holes to the pointer.

This holding apparatus is applicable, also, for holdf ing the felloes for-boring, by clamping them between two of the jaws on one s'ideand one on the other.

For forming the tenons on the ends ot' the spokes, I provide the improved cutting or tenoning-tool represented in figs. 67, and 8, wherein I ha-ve represented a face-plate, b, with four grooves radiating or nearly i so from the center; a shank, c, for attachment to the spindle; a projection, d, from the face; and'a V- f groove, e, in the face or periphery, to which four jaws, f, with shanks J, shown dotted, itting in the grooves I), are secured by the cap g, iitting over the periph. ery, and held by set-screws 'i taking into the groove e.

These jaws. have concave faces It concentric with the axis of the space between them, which faces serve as the guides for a cutter, I, attached to one of the said jaws', also for the tcnon, after it is formed, which, as it is being formed, passes into the said space.

This cutter L consists of a thin plate of steel, at tached to the front face ofthe jaw by a screw, so that its cutting-edge projects suflciently to give the requiredelearance in cutting, and the cutting-edge projects at the outer point in the direction in which it turns in advance of the other part, so that the spoke is eut at the surface first, and in a way to deliver the cutting force thereon inward, instead of outward, as would be the case it' the said edge was formed on a radial line, and thereby the splitting of the timber at thesurface, which vwould be the ease in the latter arrangement, is avoided.

the cutter behind the latter, to provide clearance for the chips.

For adjusting these jaws and the cutter for larger or smaller tenons, the cap g is provided with the curved grooves shown in dotted lines at n, and the jaws have pins o taking into them, so that, by turning the cap on the disk b, they will be forced toward or from the eenter, as the said cap is turned to the right or left.

X represents a felloe-holding device to be used in place of the centering apparat-ns, but which is not of my invention, and does not, therefore, require to be described.

Having thus described my invention,

I claim as' new and desire to secure by Letters rlhe improved boring device, consisting of the toolhead B, having ear l E thereon, spindle C, slotted shank D, screw G, nut F,felampingnut H, and clamping-screw I, all constructed and relatively arranged as set forth.

JOHN DEMlN-G.

vlli/itnesses M. L. EDWARDS,

A groove, an, is provided in the jaw, which holds N. A. MORLAN. 

